Django community: RSS
This page, updated regularly, aggregates Django Q&A from the Django community.
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django.db.utils.IntegrityError: UNIQUE constraint failed: main_produit.exposition_sante_id (Django)
Bonjour, j'essaie de creer un script qui charge des données d'un fichier csv vers mes modèles de Données sur Django. voici une partie de mes classes de données class Exposition_Sante(models.Model): Note_Sante = models.DecimalField(max_digits=4, decimal_places=2, null=True) Avis_Expert = models.TextField(null=True) class Exposition_Environement(models.Model): Note_Env = models.DecimalField(max_digits=4, decimal_places=2, null=True) Avis_Expert = models.TextField(null=True) class Produit(models.Model): Sans_NGS = models.CharField(max_length=50) Taux = models.CharField(max_length=50, null=True) Famille = models.CharField(max_length=50) Nom_Commercial_FDS = models.CharField(max_length=50) MPE = models.DecimalField(max_digits=5, decimal_places=2) Achete_sur_les_3_dernieres_années = models.CharField(max_length=50, null=True) NIP = models.CharField(max_length=50) NGS = models.CharField(max_length=5, null=True) CAS_des_ingredients_du_NGS = models.CharField(max_length=50, null=True) Nom_du_CAS = models.CharField(max_length=50, null=True) Substance_Impurete_ou_Produit_Degredation = models.CharField(max_length=50, null=True) danger_sante = models.OneToOneField(Danger_Sante, on_delete=models.CASCADE, null=True) danger_environement = models.OneToOneField(Danger_Environement, on_delete=models.CASCADE, null=True) exposition_sante = models.OneToOneField(Exposition_Sante, on_delete=models.CASCADE, null=True) exposition_environement = models.OneToOneField(Exposition_Environement, on_delete=models.CASCADE, null=True) et voici une partie de mon script: exposition_sante, _ = models.Exposition_Sante.objects.get_or_create( Note_Sante = row["santé 1"], Avis_Expert = row["Avis d'expert2"] ) exposition_environement, _ = models.Exposition_Environement.objects.get_or_create( Note_Env = row["santé 1"], Avis_Expert = row["Avis d'expert2"] ) produit, _ = models.Produit.objects.get_or_create( Sans_NGS = row["sans NGS"], Taux = row["taux"], Famille = row["Famille"], Nom_Commercial_FDS = row["nom commercial FDS"], MPE = row["MPE"], Achete_sur_les_3_dernieres_années = row["acheté sur les 3 dernières années"], NIP = row["NIP (avec 0)"], NGS = row["NGS"], CAS_des_ingredients_du_NGS = row["CAS des ingrédient du NGS"], Nom_du_CAS = row["nom du CAS"], Substance_Impurete_ou_Produit_Degredation = row["substance, impureté ou produit dégradation … -
connect django to mysql on shared hosting
I want to use mysql server in my django project and this was my database setting: DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', ... } } but this engine needs mysqlclient and i can't install it on shared host. because i need superuser access to fix some issues. So i decided to use: DATABASES = { 'default': { 'ENGINE': 'mysql.connector.django', ... } } however, this engine has some bugs!! when i wanna get a row from database, it doesn't return boolean columns(return None instead). now i want to know if there is another engine for this or any other idea to solve it?? django==2.0 python==3.6 -
Form is not saving in database when submitted
I am working on a project on Django, where user can input values on form and submit using POST request. When form is submitted, datas are not saved in database. How do I implement save data when form is submitted. Models: class DataInfo(models.Model): user = models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=models.CASCADE) beneficiary_name = models.CharField(max_length=250, blank=True) beneficiary_bank_name = models.CharField(max_length=250, blank=True) beneficiary_account_no = models.CharField(max_length=250, blank=True) beneficiary_iban = models.CharField(max_length=250, blank=True) beneficiary_routing_no = models.CharField(max_length=250, blank=True) amount = models.IntegerField(blank=True) date = models.DateTimeField(auto_now_add=True) class Meta: verbose_name = 'DataInfo' verbose_name_plural = 'DataInfo' ordering = ['-date'] '''Method to filter database results''' def __str__(self): return self.user.username Views: @login_required def TransferView(request): form = DataForm(request.POST) if request.method == "POST": if form.is_valid(): pp = form.save(commit=False) pp.user = request.user pp.save() return redirect('site:transfer_cot') else: form = DataForm() context = { 'form':form } return render(request, 'transfer.html', context) Forms: class DataForm(forms.ModelForm): class Meta: model = DataInfo fields = ('beneficiary_name', 'beneficiary_bank_name', 'beneficiary_account_no', 'beneficiary_iban', 'beneficiary_routing_no', 'amount') Template: <form method="POST" action="{% url 'site:transfer_cot' %}"> {% csrf_token %} {{ form }} <button type="submit" class="btn btn-secondary">Submit</button> </form> -
How to filter a form based on a DateTimeField using timedelta
I have the following model for Sessions: courses/models.py: class Session(models.Model): course = models.ForeignKey(Course, on_delete=models.CASCADE) course_date_start = models.DateTimeField() course_date_end = models.DateTimeField() is_in_session = True def session_id(self): new_session_date = self.course_date_start.strftime('%Y') return f'{new_session_date}{self.course.number}{self.pk}' def __str__(self): return f'{self.course.number} - {self.course.title} - {self.session_id()}' And in my users/forms.py: class EnrollStudentInCourseForm(forms.Form): global roster_limit student = forms.ModelChoiceField(queryset=Student.objects.all()) courses=SessionRemainingSlotsForm(queryset=Session.objects.annotate(num_students=Count('student')).filter(num_students__lt=roster_limit)) I'd like to filter out the fields so that it only shows sessions where course_date_start plus a week, to cover a student joining the class a little late. -
can't log_in in the django admin panel with custom user model
I have created a custom user model in django. Everything is working fine, just can't login at the admin panel. here is my code. models.py: from django.db import models from django.contrib.auth.models import AbstractBaseUser, BaseUserManager, PermissionsMixin from django.utils import timezone class User_Manager(BaseUserManager): def create_user(self,username, email, password=None): if not email or not username: raise ValueError("Users must provide username & email address") user = self.model( username = username, email=self.normalize_email(email), ) user.set_password(password) user.save(using=self._db) return user def create_superuser(self,username, email, password=None): user = self.create_user( username, email, None ) user.isSuperuser = True user.isStaff = True user.save(using=self._db) return user class User_Profile(AbstractBaseUser, PermissionsMixin): email = models.EmailField( max_length=50, unique=True, ) first_name = models.CharField( max_length=20, ) last_name = models.CharField( max_length=10, ) username = models.CharField( max_length=20, unique=True ) isStaff = models.BooleanField( default=False, null=True, ) isActive = models.BooleanField( default=True ) isSuperuser = models.BooleanField( default=False ) date_joined = models.DateTimeField( default=timezone.now ) objects = User_Manager() USERNAME_FIELD = 'username' REQUIRED_FIELDS = [ "email", ] def __str__(self): return self.username def get_full_name(self): return " ".join([self.first_name, self.last_name]) def has_perm(self, perm, obj = None): return True def has_module_perms(self, app_label): return True @property def is_staff(self): return self.isStaff @property def is_active(self): return self.isActive @property def is_superuser(self): return self.isSuperuser admin.py: from django.contrib import admin from django import forms from django.contrib.auth.models import Group from … -
Issue using Django api for bulk creating and updating records by csv
New to django and working on bulk creating and updating rows in my database using csv. I am using this: Https://pypi.org/project/django-bulk-update-or-create/#description I can get the first option: bulk_update_or_create working fine but when I use the bulk option: bulk_update_or_create_context it uploads data into my database but as numbers only (example below) - I am missing something really obvious here but I cannot figure it out. I would be expecting data like this for example (and its what I get using the first option bulk_update_or_create: vsim_iccid - 8997103118112597732F (pk) country_or_region - AE_UNITED ARAB EMIRATES operator - DU vsim_imsi - 424030246932624 online_country - AE sim_status - Enable, plmn_set - 42403 package1 - UAE 50 package2 - blank instead I get this when I use the bulk option bulk_update_or_create_context: vsim_iccid - 1 country_or_region - 21 vsim_imsi - 21 online_country - 21 sim_status - 21 plmn_set - 21 package1 - 21 package2 - 21 code: def upload_vsim_mgmt(request): form = CsvModelForm(request.POST or None, request.FILES or None) if form.is_valid(): form.save() form = CsvModelForm() obj = Csv.objects.get(activated=False) with open(obj.file_name.path, 'r') as f: df = pd.read_csv(f, encoding='latin1', error_bad_lines=False, index_col=False, dtype='unicode', sep=',').replace(np.nan, '', regex=True).replace("\t", '', regex=True) #print(df) row_iter = df.iterrows() items = [ VSIMData( country_or_region=row['Country or Region '], operator=row['Operator '], … -
How can I parse a field parameter using taggit custom tags?
Having in my project two apps that use tags, I wanted in my admin area to have these two groups of tags separated, so I followed the instructions of this thread. However I get a FieldError and a message: Cannot resolve keyword 'None' into field. Choices are: blogtags, id, name, post, slug. As it seems I have to parse 'blogtags' field as a parameter, but my poor experience in Django doesn't allow me to understand in which method do I have to do that. Any help is greatly appreciated. my models.py for the one of the two apps: from django.db import models from django.utils import timezone from django.contrib.auth.models import User from django.urls import reverse from ckeditor_uploader.fields import RichTextUploadingField from django.utils.text import slugify from taggit.managers import TaggableManager from taggit.models import TagBase, GenericTaggedItemBase class Category(models.Model): name = models.CharField(max_length=100, unique=True, primary_key=True) def __str__(self): return self.name class BlTagged(TagBase): class Meta: verbose_name = "Blog Tag" verbose_name_plural = "Blog Tags" class BlogTags(GenericTaggedItemBase): tag = models.ForeignKey(BlTagged, on_delete=models.CASCADE ) class Post(models.Model): title = models.CharField(max_length=100) content = RichTextUploadingField(blank=True, null=True, external_plugin_resources=[( 'youtube', '/static/vendor/ckeditor_plugins/youtube/youtube/', 'plugin.js', )]) date_posted = models.DateTimeField(default=timezone.now) author = models.ForeignKey(User, on_delete=models.CASCADE) is_published = models.BooleanField(default=True) slug = models.SlugField(unique=True, max_length=100, allow_unicode=True) category = models.ForeignKey('Category', default='uncategorized', on_delete=models.SET_DEFAULT, null=True) blogtags = TaggableManager(blank=True, through=BlogTags) … -
ValueError at /admin/login/ samesite must be "lax" or "strict"
Help, i'm new doing this :( i don't know how to solve this Error. I don't know how to solve this error that it throws at me in the browser. In Terminal, my project runs fine, but I don't know why that error appears in the browser :(. P.S. The project is already "working", it is in the process of improvements and I just cloned it from github to start adding changes. -
Getting UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte in Django unit test
I have a unit test where I want to test the post method of my view (which is a GenericViewSet) I want to be able to up load files in this post request. So I have this code: photo2 = SimpleUploadedFile(name='test_image.jpg', content=open(image_path, 'rb').read(), content_type='image/jpeg') data = { 'foo_uid': foo_uid, 'bazz': 'bazz', 'photos': [{'photo': photo2, 'comment': 'pic of cats'}] } response = self.client.post(path=url, data=data, format="json") When the code runs the self.client.post() raises this error: UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte I have seen a lot of answers for this question and they say to use open(..., 'rb') to read the file as binary. Well I am doing that but I still get this error. Thanks -
Can you please explain what is happening in this simple django function? formset=OrderFormSet(request.POST,instance=customer)
I am a beginner to django so I am trying to grasp the basic concepts...what happens at the formset=OrderFormSet(request.POST,instance=customer)? Does the formset get filled with some request.POST data? Does it get sent to server?Why is there the request.POST? def createOrder(request, pk): OrderFormSet = inlineformset_factory(Customer, Order, fields = ('product','status'), extra=10) customer=Customer.objects.get(id=pk) formset=OrderFormSet(queryset=Order.objects.none(),instance=customer) if request.method=='POST': formset=OrderFormSet(request.POST,instance=customer) if formset.is_valid(): formset.save() return redirect('/') context={'formset':formset} return render(request, 'accounts/order_form2.html',context) -
Redirect User After Login in Django
I am trying to implement my login page, so it can redirect to specific page in the websites. When the user click on the Login, it check if the user is staff, then send the user to admin page, not user then stay at login, if regular user, then send to regular user page. I haven't completed the LoginView yet because I just want to see if it can direct to admin page after login. I have researched online and tried many different way, but I couldn't figure out how to do so. What should I change or add in the urls.py or LOGIN_URL/LOGIN_REDIRECT_URL. Thank you! url.py urlpatterns = [ path('admin/', admin.site.urls), path('', views.index, name='index'), path('output/', views.output, name="output"), path('default_crawler/', views.default_page, name="default_page"), path('admin_page/', views.admin_page, name="admin_page"), path('regular_page/', views.regular_page, name="regular_page"), path('pass_forgot/', views.pass_forgot, name="pass_forgot"), path('pass_change/', views.pass_change, name="pass_change"), path('pass_change_success/', views.pass_change_success, name="pass_change_success"), path('pass_found/', views.pass_found, name="pass_found"), path('register/', user_views.register, name="register"), path('login/', auth_views.LoginView.as_view(template_name='users/login.html'), name='login'), ] + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT) views.py def LoginView(request): if request.method == 'POST': form = AuthenticationForm(request, request.POST) if form.is_valid(): username = form.cleaned_data.get('username') password = form.cleaned_data.get('password') user = authenticate(username=username, password=password) if user.is_staff: login(request, user) return redirect('admin_page') else: messages.error(request, "Invalid username or password") else: messages.error(request, "Invalid username or password") form = AuthenticationForm() return render(request, 'users/login.html', {'form': form}) settings.py LOGIN_URL … -
Displaying cards inside a responsive container with a grid of 3x3 initially
I'm trying with bootstrap and django to list cards inside a responsive container which in xl screen displays as a 3x3 grid container, has a scrollable overflow, and decreases according to device width. I tried to achieve this at first by wrapping the cards with a flex container with column-layout, but that's only a temporary and undesired solution, also i thought about rearranging cards through javascript upon window-resizing (but that's not optimal), or ... in other way using other techs like css-grid (which i don't know anything about how it works right now). So, what would be the best approach for this... Here i leave you guys a model i drew for this ocassion and serves as an explanatory to the main problem. CODE HERE JUST SERVES AS A TOOL FOR BETTER UNDERSTANDING... BUT IT'S NOT CRUCIAL: i have here one card.... let's say i put 12 instead. HTML <div class="card"> <div class="card-body"> <div class="card-img"> <img src="{% static 'library/img/attention.jpg' %}" class="history-img" alt=""> </div> <h6 class="card-subtitle"> Lorem ipsum dolor sit amet, co </h6> </div> <div class="card-footer"> <span class=""><i class="fas fa-eye"></i>4093</span> <span class=""><i class="fas fa-thumbs-up"></i>1234</span> <span class="badge bg-primary rounded-pill px-2">#hello_there</span> </div> </div> </div> </div> CSS body * { box-sizing: border-box !important; } … -
Django 3.0.7 - No Changes Detected after making Changes to Model
I am making changes to a model AppContactCnt to add new fields to handle deleting of records. Here is that models.py class AppContactCnt(models.Model): id_cnt = models.AutoField(primary_key=True) # idcst_cnt = models.IntegerField() idcst_cnt = models.ForeignKey(AppCustomerCst, models.DO_NOTHING, db_column='idcst_cnt') idctp_cnt = models.ForeignKey(AppContactTypeCtp, models.DO_NOTHING, db_column='idctp_cnt') idtrp_cnt = models.IntegerField() name_cnt = models.CharField(max_length=50) phone_cnt = models.CharField(max_length=50, blank=True, null=True) email_cnt = models.CharField(max_length=100, blank=True, null=True) note_cnt = models.CharField(max_length=100, blank=True, null=True) receives_emails_cnt = models.BooleanField(blank=True, null=True) deleted_cnt = models.BooleanField(blank=True, null=True) # date_deleted_cnt = models.DateTimeField(blank=True, null=True) # deleted_by_cnt = models.CharField(max_length=100, blank=True, null=True) class Meta: db_table = 'app_contact_cnt' app_label = 'easytrade20' I tried to add in managed = True no change. Also tried the following: Delete all previous migration files and pycache files except init. python manage.py migrate --fake-initial python manage.py makemigrations python manage.py migrate I am still getting No changes detected I am not sure how to proceed, any assistance is apprecaited. -
ManagementForm data is missing or has been tampered with though management_form has been included and all the errors for formset have been handled
I am trying to submit formset in django but it is giving me this error: ManagementForm data is missing or has been tampered with Though I have included management_form and have handled all the errors for formset. So, what will be the solution here?Any help will be highly appreciated. I have provided model class, form class, formset, view class and form.html. class GovernmentHoliday(models.Model): day = models.CharField(max_length=128, blank=False) date = models.DateField() holiday_name = models.CharField(max_length=128, blank=False) type = models.CharField(max_length=128, blank=False) comments = models.CharField(max_length=128, blank=False) from django import forms from django.forms import modelformset_factory class GovernmentHolidayForm(forms.ModelForm): """ """ class Meta: model = GovernmentHoliday fields = [ 'day', 'date', 'holiday_name', 'type', 'comments', ] widgets = { 'day': forms.TextInput(attrs={'class': 'form-control form-control-sm'}), 'date': forms.DateInput(attrs={'class': 'form-control form-control-sm has-feedback-left single_cal', 'id': 'single_cal3'}, format='%m/%d/%Y'), 'holiday_name': forms.TextInput(attrs={'class': 'form-control form-control-sm'}), 'type': forms.TextInput(attrs={'class': 'form-control form-control-sm'}), 'comments': forms.TextInput(attrs={'class': 'form-control form-control-sm'}), } def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) # Edit label # Non required fields # Remove help suggestion for fieldname in ['day', 'date', 'holiday_name', 'type', 'comments']: self.fields[fieldname].help_text = None GovernmentHolidayFormset = modelformset_factory(GovernmentHoliday, fields=('day', 'date', 'holiday_name', 'type', 'comments'), form=GovernmentHolidayForm, extra=0, min_num=1, can_delete = True, can_order = True, ) class GovernmentHolidayAddView(LoginRequiredMixin, CreateView): login_url = '/authentication/login/' template_name = 'leave/government_holiday_add_form.html' government_holiday_formset_class = GovernmentHolidayFormset # Override default get method … -
Prevent react router from pinging Django server
so I have app in React with Router and Django on backend. I have Dashboard component, where I send request to Django for getting posts. But when I go on /dashboard, via Link or URL in browser, I get two requests on server: GET /dashboard GET /posts Why I'm having this /dashboard request and how to stop react for pinging django with this request? Router look like this: <Router history={history}> <Switch> <Route exact path={urls.get('dashboard')}> <Dashboard/> </Route> ... </Switch> -
Django - Pivoting Data without using pivot function
I need to transform rows into columns adding up 'amount' in MONTH/YEAR. My models: class Category(models.Model): title = models.CharField(max_length=25) *Data from model:* {'id': 1, 'title': 'HOUSING'} {'id': 2, 'title': 'FOOD'} class ExpenseType(models.Model): title = models.CharField(max_length=25) category = models.ForeignKey(Category, on_delete=models.CASCADE) *Data from model:* {'id': 1, 'title': 'RENT', 'category_id': 1} {'id': 2, 'title': 'MEALS', 'category_id': 2} class Expense(models.Model): expenseType = models.ForeignKey(ExpenseType, on_delete=models.CASCADE) amount = models.FloatField() date = models.DateField() *Data from model:* {'id': 1, 'expenseType_id': 1, 'amount': 1000.0, 'date': datetime.date(2020, 5, 1)} {'id': 2, 'expenseType_id': 1, 'amount': 1000.0, 'date': datetime.date(2020, 6, 1)} {'id': 3, 'expenseType_id': 2, 'amount': 100.0, 'date': datetime.date(2020, 4, 1)} {'id': 4, 'expenseType_id': 2, 'amount': 200.0, 'date': datetime.date(2020, 4, 1)} The output I need to render: CATEGORY | 04/2020 | 05/2020 | 06/2020 HOUSING | None | 1000.0 | 1000.0 FOOD | 300.0 | None | None Extracting month/year from date Aggregating categorie's amounts by month/year I'm looking for a solution other than pivot or pandas so I can render as for loops and use it with bootstraps dataTables. -
What is 'instance=' and 'queryset=' in django?
what does it do in this function, what does it mean generally? def createOrder(request, pk): OrderFormSet = inlineformset_factory(Customer, Order, fields = ('product','status'), extra=10) customer=Customer.objects.get(id=pk) formset=OrderFormSet(queryset=Order.objects.none(),instance=customer) if request.method=='POST': formset=OrderFormSet(request.POST,instance=customer) if formset.is_valid(): formset.save() return redirect('/') context={'formset':formset} return render(request, 'accounts/order_form2.html',context) -
In django, is it possible to sort the admin page using a function (cannot be written with query expressions) without using raw SQL?
I have this admin page class: class UserAdmin(admin.ModelAdmin): levelfunc = lambda usr: dox_user(usr).rank.level list_display = ('name', levelfunc) My ultimate goal is to be able to sort the admin page using the levelfunc column, sadly django won't allow that. I tried googling a lot and most of the times it said to use a query expression which I cant in this situation because the dox_user function which returns data about the user cannot be simplified to an SQL expression and I can't move the dox_user function to anywhere else because I'll need to rewrite a lot of code if I do that. Is there even a simple way to just sort it by the user's level? -
NoReverseMatch at /signup/ - Reverse for '<WSGIRequest: POST '/signup/'>' not found
The porject I am working on is the blogging website and I am stuck at this signup process, I want it to function like after signup, the user lands on the home page, but instead this is showing me the above error views.py: def handleSignup(request): if request.method == 'POST': username = request.POST['username'] fname = request.POST['fname'] lname = request.POST['lname'] email = request.POST['email'] pass1 = request.POST['pass1'] pass2 = request.POST['pass2'] # creating users myuser = User.objects.create_user(username, email, pass1) myuser.first_name = fname myuser.last_name = lname myuser.save() messages.success(request, 'your account have been successfully created!') return redirect(request, "/home.html") else: return HttpResponse("error 404 not found") urls.py: urlpatterns = [ path("", views.home, name="home"), path("contact/", views.contact, name="contact"), path("about", views.about, name="about"), path("signup/", views.handleSignup, name="handleSignup"), ] forms in base.html: <form action="/signup/" method="post"> <div class="form-group"> <label for="username">Username</label> <input type="text" class="form-control" id="username" name = 'username' placeholder="choose a unique username"> </div> <div class="form-group"> <label for="fname">Firstname</label> <input type="text" class="form-control" id="fname" name = 'fname' placeholder="First Name"> </div> <div class="form-group"> <label for="lname">Lastname</label> <input type="text" class="form-control" id="lname" name= 'lname' placeholder="Last Name"> </div> <div class="form-group"> <label for="email">Email</label> <input type="email" class="form-control" id="email" name = 'email' placeholder="email@example.com"> </div> <div class="form-group"> <label for="pass1">Choose Password</label> <input type="password" class="form-control" name = 'pass1' id="pass1"> </div> <div class="form-group"> <label for="pass2">Confirm password</label> <input type="password" class="form-control" name = … -
How to change CSS properties from within django HTML template logic
Newbie question I presume: How do I change some CSS property (// change background image of parent div) of the parent element from within the logic in the HTML template? Do I really need to implement JS for this? <div class="exercise-items-wrapper"> {% if error %} {{ error }} {% else %} {% for x in exercise %} <div class="exercise-item"> {{x.name}} {% if x.primary_focus == 'CO' %} // change background image of parent div {% endif %} {% if x.friend_verified %} <img src="{% static 'main/images/fv.svg' %}" height="14px"> {% endif %} <p id="exercise-level" class="exercise-level">lv. VII</p> {% if x.video_verified %} <img src="{% static 'main/images/vv.svg' %}" height="14px"> {% endif %} </div> {% endfor %} {% endif %} </div> -
Django templates - How to expand related record data instead of record id when assigning to JS variable?
Some code: models.py class User(models.Model): name = models.CharField(max_length=60) group = models.ForeignKey(Group, on_delete=models.CASCADE) views.py users = User.objects.all() # sent to template template.html let users = jQuery.parseJSON('{{ users|jsonify|safe }}') tags.py @register.filter(is_safe=True) def jsonify(obj): if isinstance(obj, QuerySet): return serialize('json', obj) return json.dumps(obj) This going to assign objects where group field is id number of record in Group model. I need to get all data of this record. How to expand this data? -
Display multiple dynamic object with for loops in templates
So to summary, my database structure is like this: test |_ question |_ choice |_ choice |_ choice |_ question |_ choice |_ choice |_ choice Now I want to display all of the choices of each question on a single page. My views.py: def index(request): data = { 'greeting': 'Welcome User!', 'form_test': forms.TestForm, 'form_question': forms.QuestionForm, 'form_choice': forms.ChoiceForm, 'test': models.Test.objects.get(pk=1), 'questions': models.Question.objects.filter(test_id__exact=1), } questions = models.Question.objects.filter(test_id=1) for question in questions: data['choices_{}'.format(question.id)] = models.Choice.objects.filter(question_id=question.id) print(data) return render(request, 'et_app/index.html', context=data) So technically if I have 2 questions, my data would look something like this: { ... 'choices_1': ... 'choices_2': ... ... } Now, my problem is on displaying these choices on the templates. I tried: {% for question in questions %} <h4>Q: {{ question.content }}</h4> <p>Choices:</p> <ul class="list-group"> {% for choice in 'choices_{}'.format(question.id) %} <li class="list-group-item">{{ choice.content }}</li> {% endfor %} </ul> {% endfor %} It just broke the whole thing. I'm relatively new to Django so forgive my naiveness. How can I fix this? Thanks a lot! -
Use a scan device with django
How is the best native way to scan an image using a device? Im working on web project with Django. I just googled and as far as i know there is a way to get this done with html5 and getusermedia() api. Thanks in Advance, -
Django Page not found with post request
So I am new to Django and I'm trying to create a HTML form (just following the tutorial for the name input) and I can input the name but can't direct to the /thanks.html page. $ views.py from django.http import HttpResponseRedirect from django.shortcuts import render from .forms import NameForm def get_name(request): # if this is a POST request we need to process the form data if request.method == 'POST': # create a form instance and populate it with data from the request: form = NameForm(request.POST) print(form) # check whether it's valid: if form.is_valid(): # process the data in form.cleaned_data as required # ... # redirect to a new URL: return HttpResponseRedirect('/polls/thanks.html') # if a GET (or any other method) we'll create a blank form else: form = NameForm() return render(request, 'name.html', {'form': form}) $ name.html <html> <form action="/polls/thanks.html" method="post"> {% csrf_token %} {{ form }} <input type="submit" value="Submit"> </form> <html> $ /mysite/urls from django.contrib import admin from django.urls import include, path urlpatterns = [ path('polls/', include('polls.urls')), path('admin/', admin.site.urls), ] $ mysite/polls/urls.py from django.urls import path from polls import views urlpatterns = [ path('', views.get_name, name='index'), ] When I go to to the page, I can enter my name fine but … -
Django form is not showing is not generating in html template
I am using django.contrib.auth.views.LoginView for views and here are my files html <form method="GET"> {% csrf_token %} {{ formlog|crispy }} </form> views.py def index(request): formlog = auth_views.LoginView.as_view() if request.method == 'POST': form = UserRegisterForm(request.POST) if form.is_valid(): form.supervalid() form.save() username = form.cleaned_data.get('username') messages.success(request, f'Dear {username} you have been created a new accound!') return redirect('main') else: form = UserRegisterForm() return render(request, 'main/index.html', {'form': form, 'formlog': formlog}) forms.py from django import forms from django.contrib.auth.models import User from django.contrib.auth.forms import UserCreationForm class UserRegisterForm(UserCreationForm): email = forms.EmailField() name_and_surname = forms.CharField(min_length=5, max_length=30) def supervalid(self): expr_a = User.objects.filter(name_and_surname=self.cleaned_data['name_and_surname']).exists() expr_b = User.objects.filter(email=self.cleaned_data['email']).exists() if expr_b: raise ValidatioError(f'There already exists user with that email, use another one ;)') if expr_a: raise ValidatioError(f'This name is already used, sorry') class Meta: model = User fields = ['username', 'email', 'password1', 'password2'] please help istead of talking about things that dont metter. Thanks for help ;)
